Articulatory discoordination is often said to be an important feature of the speech production disorder in dysarthria, but little experimental work has been done to identify and specify the coordination difficulties. The present study evaluated the coordination of labial and lingual gestures for /u/ production in persons with Parkinson's disease…

The aim of the investigation is to compare voice and speech quality in alaryngeal patients using esophageal speech (ESOP, eight subjects), electroacoustical speech aid (EACA, six subjects) and tracheoesophageal voice prosthesis (TEVP, three subjects). The subjects reading a short story were recorded in the sound-proof booth and the speech samples…

This investigation was motivated by observations that when persons with dysarthria increase loudness their speech improves. Some studies have indicated that this improvement may be related to an increase of prosodic variation. Studies have reported an increase of fundamental frequency (F0) variation with increased loudness, but there has been no…

Research supported by the Joint Speech Research Unit. (DD)

A study investigated the nature of clear and dark sounds (resonance) in English, focusing on the features associated with the lateral consonant /l/. Subjects were three male undergraduate students and one male university faculty member, all native speakers of different English varieties. Each subject read aloud 27 short phrases or sentences. Using…

This case study describes an adolescent with multiple articulation errors. Comparison with previous studies found this individual demonstrated longer phrase durations and more variability than either normally articulating or speech-disordered and language-disordered children. Interaction between syntactic and articulatory performance was also…

Short-term changes in vowel fundamental frequency immediately preceding and following voiceless obstruents were examined in 30 4-year-olds, 8-year-olds, and 21-year-olds. Results suggest that fundamental frequency offset is simply an acoustic consequence of producing a voiceless obstruent preceded by a vowel since there were minimal age-related…

The purpose of this comprehensive bibliography (approximately 200 items) is to facilitate the clinician's role in assessing and planning intervention for speech production of hard-of-hearing and deaf individuals. This set of references is alphabetized by separate categories that include articles, books, chapters in books and monographs. Consulting…

Research supported by a grant from the National Institutes of Health. (DD)

The terms "fortis" and "lenis" are variously regarded as having one single underlying phonetic correlate or many. An exploratory analysis of acoustic and aerodynamic data on contrasting stop series in a number of European and non-European languages confirms that a significant variation in peak intra-oral pressure and in articulatory stricture…

Based on portions of The Emotional Content of Speech: Some Exploratory Acoustical Studies'', Naval Aerospace Medical Research Laboratory Monograph 18, Pensacola, Florida, 1972. (DD)

Research supported in part by grants from the National Institute of Child Health and Human Development. (RS)

The research described in this article had 2 aims: to permit greater precision in the conduct of naming experiments and to contribute to a characterization of the motor execution stage of speech production. The authors report an exhaustive inventory of consonantal and postconsonantal influences on delayed naming latency and onset acoustic…

This study examined Australian English (AE) and Thai-English bilingual (TE) speakers' ability to perceive word-final stops in their native and non-native languages. In the perception experiment, the TE listeners were able to discriminate stop contrasts differing only in place of articulation (/p/-/t/, /p/-/k/, /t/-/k/) in both English and Thai…